garadinervi:Günther Uecker, March 13, 1930 / 2019(image: Günther Uecker, Optische Partitur Ulm, 2000
garadinervi:Günther Uecker, March 13, 1930 / 2019(image: Günther Uecker, Optische Partitur Ulm, 2000) -- source link
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